<?php
function clean_input($bad){

// sanitize comment
$good = strip_tags($bad);
return $good;
}

function make_readable_time($time_in_second){
//$time_in_second = time() function
date_default_timezone_set("Asia/Saigon");
return date('d/m/Y H:i:s', $time_in_second);
}
?>